LJ12A3-4-Z/BX NPN Inductive Proximity Sensor

The LJ12A3-4-Z/BX is an inductive proximity sensor designed for non-contact detection of metallic objects. It operates by generating an electromagnetic field and detecting changes when a metal object enters its sensing range. This sensor features an NPN normally open (NO) output, making it suitable for interfacing with microcontrollers, PLCs, and industrial control systems. With a rugged threaded metal housing and reliable performance, it is widely used in automation, position sensing, and object detection applications.

Technical Specifications:

• Model: LJ12A3-4-Z/BX
  
• Sensor Type: Inductive Proximity Sensor
  
• Output Type: NPN Normally Open (NO)
  
• Sensing Distance: 4 mm
  
• Operating Voltage: 6V to 36V DC
  
• Output Current: Up to 300 mA
  
• Detection Object: Metallic objects only
  
• Response Frequency: ~500 Hz
  
• Operating Temperature: −25°C to +70°C
  
• Housing Material: Nickel-plated brass
  
• Thread Size: M12
  
• Cable Length: Approximately 1 meter
  
• Wire Configuration: Brown (VCC), Blue (GND), Black (Signal Output)
  
• Protection Rating: Typically IP67

Features:

• Non-contact detection of metal objects
  
• High reliability and long operational life
  
• Fast response time
  
• Compact M12 threaded cylindrical design
  
• Easy installation with mounting nuts
  
• Wide operating voltage range
  
• Strong anti-interference capability
  
• Suitable for harsh industrial environments

Applications:

• Industrial automation systems
  
• Position and limit detection
  
• Conveyor systems and object counting
  
• Machine tools and CNC equipment
  
• Robotics and automation projects
  
• Safety and control systems
  
• Metal detection in manufacturing processes